{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "3.4.1"
              },
              {
                "fixed": "3.4.10"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "de6305915f86bb33c83b1fe782a2b8a76920aec1"
            },
            {
              "fixed": "e8c0a16d94ddf844668d684a7d42b37ac8e0fc02"
            },
            {
              "fixed": "8153da40fe720b1d25db12aa3f993918da15bd3b"
            }
          ],
          "repo": "https://github.com/mariadb-corporation/mariadb-connector-c",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-fmq9-qjxj-qpf7"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-297"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107819.json"
  },
  "details": "MariaDB Connector/C is a C and C++ client library for connecting applications to MariaDB and MySQL databases. From 3.4.1 until 3.4.10, the MariaDB Connector/C libmariadb Zero-Configuration SSL authentication-switch logic checked certificate trust failure but did not reject a TLS hostname verification mismatch before selecting a non-hashing authentication plugin. An active man-in-the-middle attacker with a valid certificate for another hostname could request mysql_clear_password and obtain the database password inside the attacker-controlled TLS connection. Other MariaDB connectors are not affected. This issue is fixed in version 3.4.10.",
  "id": "CVE-2026-107819",
  "modified": "2026-10-11T02:30:46.941078966Z",
  "published": "2026-10-09T17:25:45.082Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/mariadb-corporation/mariadb-connector-c/releases/tag/v3.4.10"
    },
    {
      "type": "WEB",
      "url": "https://jira.mariadb.org/browse/CONC-846"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107819.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/MariaDB/server/security/advisories/GHSA-fmq9-qjxj-qpf7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107819"
    },
    {
      "type": "FIX",
      "url": "https://github.com/mariadb-corporation/mariadb-connector-c/commit/e8c0a16d94ddf844668d684a7d42b37ac8e0fc02"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "MariaDB Connector/C: libmariadb allowed cleartext password leakage on TLS hostname verification failure"
}